🇩🇪 Rosenheim is a city in Bavaria, Germany. It is an independent city located in the centre of the district of Rosenheim, and is also the seat of its administration. It is located on the west bank of the Inn at the confluence of the rivers Inn and Mangfall, in the Bavarian Alpine Foreland. It is the third largest city in Upper Bavaria. Rosenheim is the economic centre and the busiest place in the region.